Its area is 66.476 cm2
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Area = Pi*r2 = Pi*92 = approximately 254.47cm2
254.47radius:= diameter/2= 18/2= 9Area of circle:= pi * radius2= 3.1416 * 92= 3.1426 * 81= 254.47
Area = (pi*92)/2 127.2345025 square meters
Area = pi*92 = 254.469 square mm to 3 decimal places
Surface area of the sphere = 4*pi*92 = 1017.87602 or about 1018 sq cm